Node.js zlib.unzip() Method
The zlib.unzip() method is an inbuilt application programming interface of the Zlib module which is used to decompress a chunk of data.
Syntax:
zlib.unzip( buffer, options, callback )
Parameters: This method accepts three parameters as mentioned above and described below:
- buffer: It can be of type Buffer, TypedArray, DataView, ArrayBuffer, and string.
- options: It is an optional parameter that holds the zlib options.
- callback: It holds the callback function.
Return Value: It returns the chunk of data after decompression.
The below examples illustrate the use of zlib.unzip() method in Node.js:
Example 1:
javascript
const zlib = require( "zlib" );
let input = "GfG" ;
zlib.gzip(input, (err, buffer) => {
zlib.unzip(buffer, (err, buffer) => {
console.log(buffer.toString( 'utf8' ));
});
});
console.log( "Data Decompressed..." );
|
Output:
Data Decompressed...
GfG
Example 2:
javascript
const zlib = require( "zlib" );
let input = "GfG" ;
zlib.gzip(input, (err, buffer) => {
zlib.unzip(buffer, (err, buffer) => {
console.log(buffer.toString( 'base64' ));
});
});
console.log( "Data Decompressed..." );
|
Output:
Data Decompressed...
R2ZH
Reference: https://nodejs.org/api/zlib.html#zlib_zlib_unzip_buffer_options_callback
Last Updated :
31 Mar, 2023
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